ADHD'ing

When your ADHD makes you do stupid things, for instance bringing something upstairs that should be downstairs.

When you are ADHD'ing

Dani: "oh wheres the remote".
Holly: "fuck i adhd'd and left it in the bathroom.

Another Example - writing an urban dictionary definition when I should be doing work, prostrating from doing that and watching a show, greys anatomy, sandra oh don't be mad.

Dani: " so the other day I caught the cat eating the crotch of my underpants.." (holly's brain - Lalalalalalala)
Holly: " Dude, what did you say i was completely ADHD'in.